我正在使用#include <stdio.h>
int strlength(char* str);
int main() {
char *str;
int comp;
printf("Please enter the string: ");
scanf("%s", str);
printf("The length of the string is: %d\n", strlength(str));
return 0;
}
int strlength(char *str) {
int length = 0;
while(*str != '\0') {
length++;
str++;
}
return length;
}
用Python绘制一些国家。为此,我正在使用cartopy
函数,如下所示:
add_geometry
我希望能够更改已添加的几何对象的颜色。这样一来,我可以在动画国家/地区改变颜色的情况下,而不必每帧重新绘制所有内容。例如,所有国家都将以白色开头,然后一个接一个地变成蓝色。
但是,添加对象后,似乎无法找到改变颜色的方法。
使用maplotlib中的常规绘图,我会这样做:
geo = ax.add_geometries(geometry,facecolor='ghostwhite', edgecolor='black',crs=data_transf)
对于import matplolib.pyplot as plt
line, = plt.plot([1,2,3],[4,5,6],'red') #Plot in red
line.set_color('green') #Change the color to green
中添加的set_color
中的FeatureArtist
没有cartopy
功能。实际上,似乎add_geometries
的属性color
,facecolor
,...甚至不存在,如对FeatureArtist
的调用所示。
对于图,调用返回:
matplotlib.artist.getp
对于几何图形:
>>import matplotlib.artist as mart
>>mart.getp(line)
agg_filter = None
alpha = None
animated = False
antialiased = True
children = []
clip_box = TransformedBbox( Bbox(x0=0.0, y0=0.0, x1=1.0, ...
clip_on = True
clip_path = None
color = (1.0, 0.0, 0.0, 1.0)
contains = None
dash_capstyle = butt
dash_joinstyle = round
data = (array([1, 2, 3]), array([4, 5, 6]))
drawstyle = default
figure = Figure(640x476)
fillstyle = full
gid = None
in_layout = True
label = _line0
linestyle = -
linewidth = 1.5
marker = None
markeredgecolor = (1.0, 0.0, 0.0, 1.0)
markeredgewidth = 1.0
markerfacecolor = (1.0, 0.0, 0.0, 1.0)
markerfacecoloralt = none
markersize = 6.0
markevery = None
path = Path(array([[ 1., 4.], [ 2., 5.], ...
path_effects = []
picker = None
pickradius = 5
rasterized = None
sketch_params = None
snap = None
solid_capstyle = projecting
solid_joinstyle = round
transform = CompositeGenericTransform( TransformWrapper( ...
transformed_clip_path_and_affine = (None, None)
url = None
visible = True
xdata = [1 2 3]
xydata = [[ 1. 4.] [ 2. 5.] [ 3. 6.]]
ydata = [4 5 6]
zorder = 2
如您所见,我无法更改>>mart.getp(geo)
agg_filter = None
alpha = None
animated = False
children = []
clip_box = TransformedBbox( Bbox(x0=0.0, y0=0.0, x1=1.0, ...
clip_on = True
clip_path = None
contains = None
figure = Figure(1200x990)
gid = None
in_layout = True
label =
path_effects = []
picker = None
rasterized = None
sketch_params = None
snap = None
transform = CompositeGenericTransform( TransformWrapper( ...
transformed_clip_path_and_affine = (None, None)
url = None
visible = True
zorder = 1
个属性(或类似属性)。
答案 0 :(得分:0)
Cartopy界面中绝对缺少此功能。您介意在Cartopy issue tracker上发布问题吗?
作为一种解决方法,您可以修改私有属性_kwargs
,该属性似乎可以正常工作:
import cartopy.feature as cfeature
f = ax.add_feature(cfeature.STATES)
f._kwargs['edgecolor'] = 'blue'
注意::这是使用私有API,因此可能会更改/中断而不会发出任何警告。这只是让您动起来的解决方法,但我强烈建议您报告此问题,以便可以向Cartopy添加适当的解决方案。